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<h1 class="topictitle1">Live Mount or Instant Recovery Job Failed and a Message Is Displayed Indicating that the Storage Device Failed to Scan Storage Resources</h1>
<div><div class="section"><h4 class="sectiontitle">Symptom</h4><p>When a user performs live mount or instant recovery for a CNware VM, a message is displayed on the job page of the <span>OceanProtect</span>, indicating that the storage device failed to scan storage resources. After multiple retries, the storage resources still cannot be scanned, and the job failed.</p>
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<div class="section"><h4 class="sectiontitle">Possible Causes</h4><ul><li>If the target CNware host selected for live mount or instant recovery is disconnected from the logical port of the <span>OceanProtect</span>, the scanning will fail.</li><li>Some NFS services of the <span>OceanProtect</span> are not enabled.</li><li>The number of share paths of the <span>OceanProtect</span> exceeds the internal upper limit. As a result, the file system data scanned by CNware is incomplete.</li></ul>
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<div class="section"><h4 class="sectiontitle">Procedure</h4><ol><li><span>Check the network of the target CNware host selected for live mount or instant recovery, and ensure that it is connected to the backup network of the <span>OceanProtect</span>.</span><p><ol type="a"><li>Use PuTTY to log in to the host machine.</li><li>Run the following command to check the network (<em>xxx.xxx.xx.xx</em> indicates the backup network IP address of the <span>OceanProtect</span>):<pre class="screen">ping <em>xxx.xxx.xx.xx</em></pre>
</li></ol>
</p></li><li><span>Confirm that all NFS services are enabled.</span><p><ol type="a"><li>Log in to DeviceManager. For details, see <a href="en-us_topic_0000002164819058.html">Logging In to DeviceManager</a>.</li><li>Choose <strong>Settings</strong> &gt; <strong>File Service</strong> &gt; <strong>NFS Service</strong>.</li><li>Click <span class="uicontrol"><b>Modify</b></span>.</li><li>Select all NFS services.</li><li>Click <span class="uicontrol"><b>Save</b></span>.</li></ol>
</p></li><li><span>Delete unnecessary share paths of the <span>OceanProtect</span>.</span><p><ol type="a"><li>Log in to the target host.</li><li>Run the following command and view return values:<pre class="screen">showmount -e <em>NFS logical port IP address of the backup storage</em></pre>
<ul><li>If no value is returned, no share path exists. In this case, go to <a href="#EN-US_TOPIC_0000002164819022__li93637435237">4</a>.</li><li>If there are return values, proceed to <a href="#EN-US_TOPIC_0000002164819022__li38481727193911">3.c</a>.</li></ul>
</li><li id="EN-US_TOPIC_0000002164819022__li38481727193911"><a name="EN-US_TOPIC_0000002164819022__li38481727193911"></a><a name="li38481727193911"></a>Compare the return values.<ol class="substepthirdol"><li>Log in to DeviceManager. For details, see <a href="en-us_topic_0000002164819058.html">Logging In to DeviceManager</a>.</li><li>Choose <strong>Services</strong> &gt; <strong>File Service</strong> &gt; <strong>File Systems</strong>.</li><li>Click the sorting icon on the right of <span class="uicontrol"><b>Created</b></span> to sort the records in descending order.</li><li>Compare the return values. If the latest file system in the return values is different from that displayed on the page, the internal upper limit is exceeded.</li><li>Contact technical support engineers.<ol><li>Choose <strong>Services</strong> &gt; <strong>File Service</strong> &gt; <strong>Shares</strong>.</li><li>Locate the row of the share path that is no longer used, and choose <strong>More</strong> &gt; <strong>Delete</strong>.</li></ol>
</li></ol>
</li><li>Delete unnecessary IP addresses.<ol class="substepthirdol"><li>Check the return values. Each share path has a client IP address list. Find the share with a large IP address list (with more than 20 IP addresses) and copy the share name.</li><li>Log in to DeviceManager. For details, see <a href="en-us_topic_0000002164819058.html">Logging In to DeviceManager</a>.</li><li>Choose <strong>Services</strong> &gt; <strong>File Service</strong> &gt; <strong>Shares</strong> &gt; <strong>NFS Shares</strong>.</li><li>Click the search icon next to <strong>Share Name</strong> and enter the copied share name for search.</li><li>Click <strong>Share Path</strong> and remove unnecessary IP addresses or replace IP addresses in the same network segment with the IP address segment, for example, <strong>192.168.0.0/24,*</strong>.</li></ol>
</li></ol>
</p></li><li id="EN-US_TOPIC_0000002164819022__li93637435237"><a name="EN-US_TOPIC_0000002164819022__li93637435237"></a><a name="li93637435237"></a><span>Re-execute the live mount or instant recovery job.</span></li></ol>
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<div class="parentlink"><strong>Parent topic:</strong> <a href="en-us_topic_0000002200060029.html">FAQs</a></div>
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